wireless lcd display via bluetooth factory

Circuit diagram of the wireless LCD display via Bluetooth is shown in Fig. 1. It is built around Arduino Uno board along with a 16×2 alphanumeric LCD (LCD1), Bluetooth module (HC-05) and a preset (VR1).

HC-05 Bluetooth module has six pins out of which four (Vcc, GND, Rx and Tx) are used in this project. Power supply for the circuit can be from an adaptor (12V, 1A) or USB.

Arduino IDE is used for programming Arduino board. LCD’s library (#include ) is used, which is already available in the latest IDE’s library. Here, the baud rate or speed of serial communication is set to 9600. For serial communication, inbuilt functions such as serial.begin(), serial.available() and serial.readString() are used.

The PCB layout for the wireless LCD display is shown in Fig. 2 and its components layout in Fig. 3. After connecting the circuit on the PCB, follow the steps given below to test the project:

2. Open Arduino IDE. Select COM port from your computer’s Device Manager. Set baud rate to 9600. Compile and upload the code (LCD.ino) to Arduino board.

3. Connect the 12V power supply to the Arduino board. The LED in HC-05 Bluetooth module will blink continuously. This means Bluetooth module is working fine. The LCD will display ‘Welcome’ message. If not, adjust the preset by varying VR1 till you get clear text on LCD1.

4. Pair HC-05 module with your smartphone’s Bluetooth using 1234 as password. After getting paired, the LED on HC-05 module will blink intermittently instead of blinking continuously.

5. Open Bluetooth Terminal and pair it with HC-05 module. You will see ‘Connected’ on the app. Type a message and press Send. The message will get displayed on LCD1.

Hi, guys!! I"m Sridhar Janardhanback with another ibles.Today I am going to teach you how to send data from mobile to Arduino and display using it an LCD.This is achieved by usingHC-05 Bluetooth module.

The Bluetooth module is used fortransmitting data wirelessly from the transmitter to receiver.The hc-05 module works on the same principle but on the different operation.let me explain the basic pins of the Bluetooth module

Interfacing an LCD to an Arduino is hectic as it has much connection and also spoils the beauty of the circuit by its ugly wire.To avoid these stuff I2Cis used.

it is sometime difficult to connect with bluetooth in ipad. keep trying for the connetion or change the bluetooth app. after this it will not work please let me now.0

Vin pins - available via the Arduino header, or the separate pin header to the side. You can supply 3v - 16v which is regulated down to 3.3v for Pixl.js. The unpopulated pins to the side are spaces to accommodate a connector for JST PHR-2 Batteries.

CR2032 LiPo battery - you can not use a CR2032 LiPo battery without some minor modifications as the voltage is too high. There is a small solder jumper below the CR2032 holder. Cut the existing connection and solder between the other two pads. This causes the battery to be connected via the voltage regulator. Note: the LiPo will then be connected directly to Vin, and you will be unable to use the USB for power (as it"ll connect to LiPo to 5v).

This means that when running off a CR2032 battery you could expect around 20 days of battery life with light JavaScript usage, LCD on, and no backlight. Life can be significantly improved by turning the LCD off when it is not needed.

Once Pixl.js displays Removed saved code from Flash you can release it - this will clear out any previously saved code and bonding data that could have caused problems.

Do not short all 3 pins of the solder jumper together! This will connect 3.3v to Vin, which will power your Pixl"s processor (and the LCD) directly from Vin, which is likely to be a high enough voltage that it will permanently damage it.

Bluetooth is the most popular way of connecting an Arduino to a smartphone wirelessly. In this tutorial, we will create an arduino-bluetooth interface and send messages from an arduino to smartphone and arduino to a personal computer.

Bluetooth is a radio communication protocol that was created as a wireless alternative to the  RS-232 serial protocol. Today, this technology is popular in connecting two or more mobile devices, particularly smartphones, tablets and laptop computers.

The HC-05 module has two modes: Data and Command mode. When in data mode, the module acts as a wireless bridge between two devices. The module is in data mode by default. The KEY pin, when pulled high (connected to 3.3V), is used to allow the HC-05 to enter AT Command mode. AT commands are used to configure the module. We will discuss these commands later.

We don’t need to use AT commands to control a LED via bluetooth. We simply need to put the HC-05 module back to command mode and start sending data through it.

We can also use the HC-05 bluetooth module to create a serial connection between the Arduino and a personal computer. You may need a bluetooth dongle if your PC doesn’t have bluetooth radio.

After that, open Bluetooth settings. This is not readily visible. To do this, go to Control Panel then Hardware and Sound. Type bluetooth on the search box:

Double-clicking “Change Bluetooth settings” will open a dialog box. On the Options tab of this dialog, check “Allow Bluetooth devices to find this computer”.

The COM port is now usable. Here’ its COM59. We can then now use to communicate with the Arduino via bluetooth and issue the same commands we used in the android app:

The cooler result of the step above is that you can now program your Arduino wirelessly! On the IDE, just select the Bluetooth COM port as your Arduino port (COM59 in our example) and upload a sketch just like how you would with a USB cable.

Backing up your car safely just got a whole lot easier. This sleek universal replacement rearview mirror with 4.3" monitor, replaces your old mirror with a fully integrated LCD monitor, pairing perfectly with any of EchoMaster’s many blind spot camera and back-up camera options.

Displaying feeds from your vehicle cameras isn’t the only thing the MM-4320-BT can do. It also comes with a Bluetooth-capable speaker, letting you communicate safely via your smartphone. The caller ID display is handy when you’re receiving a call while driving, and LED reading and map lights give you some extra visibility in the dark.

In the case of bluetooth module, this is connected as follows, with the pins 0 and 1 of the Arduino, connected to the TX and RX of Bluetooth module respectively and powered by VCC (5V) and GND of the Arduino .:

I have put pictures of the diagrams independently to be more clear the connection diagram, but should note that the Bluetooth module and the LCD are connected to the same circuit.

The code that I implemented on the Arduino is very simple and includes only the configuration of LCD and serial communication, through which we can control the communication with the Bluetooth module.

This is a SMD BLE module used in our BLE Bee and Xadow BLE. It is based on TI CC2541 chip, enables robust network nodes to be built with low total bill-of-material costs and highly suited for ultralow power consumption systems. The module is small and easy to use, with the preprogrammed firmware of manufacturer, you could quickly build BLE communications via its AT command. Supporting BLE communications with iphone, ipad and Android 4.3.

Example: Set the device name to Seeed, sending the AT + NAMESeeed, return OK + Set: Seeed AT this time, the name of the bluetooth module has been changed to Seeed.

Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR(Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband.

The display is the most visible component of an electric drivetrain. With the remote control the cyclist has the riding programs and all cycling data under his thumb. The backlight guarantees readability under all conditions.

IDbike provides different software versions for the displays. With special factory software the parameters of the bike can be changed in a simple way: